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<?xml version='1.0'?>
<!DOCTYPE sconsdoc [
<!ENTITY % scons SYSTEM "../scons.mod">
%scons;
]>
<abstract xmlns="http://www.scons.org/dbxsd/v1.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0/scons.xsd scons.xsd">
<!--
Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 The SCons Foundation
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-->
<para>
&SCons; is a software construction tool (build tool, or make tool)
implemented in Python, which uses Python scripts as "configuration
files" for software builds. Based on the design which won the
Software Carpentry build tool competition, &SCons; solves a number of
problems associated with other build tools, especially including the
classic and ubiquitous &Make; itself.
</para>
<para>
Distinctive features of &SCons; include: a modular design that
lends itself to being embedded in other applications; a global
view of all dependencies in the source tree; an improved model for
parallel (<option>-j</option>) builds; automatic scanning of files for
dependencies; use of MD5 signatures for deciding whether a file
is up-to-date; use of traditional file timestamps instead of
MD5 signatures available as an option;
use of Python functions or objects to build target files; easy user
extensibility.
</para>
<para>
This paper discusses the goals of the &SCons; project, gives an overview
of the design of &SCons; itself, describes the development process used,
and discusses future plans and directions for the tool.
</para>
</abstract>
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